Like exhuming fossil remains, stories or myths from the past, the act of unearthing old thoughts can have several meanings. Here he has a strictly political and philosophical one: an "archeology" that is then "politics of philosophy." Through a remarkable reading of his vast work, the thought of Gabriel Tarde (1843-1904) is approached us not as a plate to taste, delight of the reader-guest, but as "tool box", or "homework", as a work to be continued: it is about maintaining an intense experience of thought, in this case of Tarde a Lazzarato, but also towards us, because what is proposed to us here is a "politics of multiplicities." And since the notion of multiplicity, like that of difference, as that of becoming and so many others must become "political", if they do not want to become simple jargon prêt à porter This book can be thought of as two times: the first operation is to clear the concept of "multiplicities" in the philosophy of the difference of Afternoon, yes, long before Deleuze-Guattari! and litigate for its Right to exist Lazzarato delves into its amazing economic psychology that seeks to replace the place of the "productive" multiplicities drowned by dialectics, the theory of value-work and liberal theories. The second operation is explicitly political deduction. For if invention and cooperation between brains are active forces prior to their capture, to their neutralization in work, reproduction and representation, then the demand, or rather the bet, will consist in an effort to "take us" (? for what we are?) before or outside or beyond the theoretical and practical servitude, without knowing in advance what this can or wants to say.